Reversible shaft-governor.



No. 832,990. PATENTED 00T. 9, 1906. G. G. MACOMBER.

REVERSIBLE SHAFT GOVERNOR. APPLICATION FILED PEB. s, 1906.

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No. 832,990. PATENTBD 00T. 9,1906.

- G. C. MAGOMBER.

REVERSIBLE SHAFT GOVERNOR.

APPLIGATloN FILED PEB.s,190s.

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GRANT C. MACOMBER, OF BATTLE CREEK, MICHIGAN.

REVERSIBLE .SHAFT-GOVERNOR.

Specification of Letters Patent.

Patented Oct. 9, 1906.

Application filed February 8.1906. Serial No. 300.176.

To a/ZZ whom t may concern.-

Be it known that I, GRANT C. MAcoMBER, a citizen of the United States,residing at Battle Creek, in the county of Calhoun and State ofMichigan, have invented new and useful Improvements in Reversible Shaft-Governors, of which the following is a specifi cation.

This invention relates to a reversible shaftgovernor.

A device involving my invention may be used advantageously in manydifferent ways, one of which is in conjunction with the valve of asteam-engine- The primary object of the invention is to provide a simpledevice of the' character set orth which is effective in operation andwhich can be instantly and easily reversed by an engineer.

The device is compact, its parts are thoroughly protected, and it may beapplied to the crank-shaft of an engine of any suitable type.

In order to enable those skilled in the art to practice the invention, Ihave illustrated in detail in the drawings accompanying and forming apart of this specification one form of embodiment ofthe invention, whichI will fully set forth in the following description. The novelty of theinvention will be included in the claims succeeding said description.

In the drawings, Figure 1 is a central longitudinal section of agovernor including my invention. Fig.2 is a transverse sectionalelevation of the governor, the section being on the line 2 2 of Fig. 1.Fig. 3 is a transverse section of the governor on the line 3 3 ofFig. 1. Fig. 4 is a similar section on the line 4 4 of Fig. 1.

Like reference characters refer to like yparts 4 throughout the severalviews.

The different parts of the governor may be supported by any suitablecarrier. I have shown a carrier for this purpose and have denoted thesame in a general way by r'2. The carrier consists of a substantiallywheel-like casing. The carrier or casing 2 is ordinarily rotative withthe crank-shaft of the engine with which the governor is associated, andfor this purpose it may be keyed or pinned to said shaft. So that thecarrier or casing may have an ample bearing upon the shaft the former isprovided with oppositely-disposed hubs 3 and 4, an eccentric, as5surrounding the hub 4. The eccentric 5 is contiguous to one of theouter faces of the carrier or casing 2, and it has a ange, as 6,extending into the interior of the casing through a slot in one of thewalls thereof, said iiange being provided with an enlargement or hub, as7, into the opposite ends of which are tapped pivot-screws, as 8,constituting pivots or journals for the eccentric, the heads of thescrews being mounted for rocking motion in journal-openings in theopposite walls of the casing 2. From this it will be understood that theeccentric may be adjusted. By separating the screws 8 from the eccentricthe latter can be disconnected from its carrier, it being understoodthat for this purpose'the hub 4 is not integral with the body of thecasing 2. The bearings upon which the eccentric 5 oscillates areprotected from the action of dust and other fiying particles. Theeccentric 5 has an inwardly-disposed toothed segment, as 9, situated ina segmental slot formed in the outer face of one of the walls of thecasing 2. Screws, as 10, tapped into the end walls of said slots serveas convenient adjustable stops for limiting the motion of the segment 9and necessarily of the eccentric, of which said segment in the presentcase forms an integral part.

Supported by suitable bearings removably associated with the casing 2 isa rock-shaft, as 11, which is provided at one end with a gear, as 12,meshing with the teeth of the segment 9, the action being such that whenthe shaft 1 1 is turned the eccentric 5, through the intermediatemeshing toothed parts, will be angularly adjusted to vary its stroke,assuming that it originally occupied a dead-center position. The gear 12is fastened to its shaft in any desirable way and rotates in an openingin one of the outer faces of the casing 2, which opening intersects theslot in which the segment 9 is located. The two toothed parts are inthis way protected, they being partially housed by the casing 2.

Abar is represented as 13 and as attached in any desirable waysubstantially centrally of its length to the rock-shaft 11 in order topresent two oppositelydisposed arms or branches of equal length. Thebranches or arms of the bar 13 are jointed at their outer ends to links,as 14, jointed in turn at their outer ends to voscillatory weights, as15, pivotally supported between the opposite walls of the casing 2. Thepivots for the two oscillatory or swinging weights are removablymounted, so that whenoccasion requires the weights can be dismounted.Between the IOO IOS

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bar 13 and links 14 and links 14 and weights 15 will bein line with eachother, the bar and links acting as a locking-toggle to maintain theweights separated their maximum extent. When, however, the pivots arethrown out of line or the locking-toggle alluded to is I.- 1 beingshown.

- means shown for this purpose.

broken, the spring 16 becomes effective for drawing the weights inward,so that under the action of the rotating shaft with which the governoris associated the weights may be thrown out by centrifugal action whenthe speed of the engine exceeds a certain standard.

'Surrounding the eccentric 5 is a divided ring 18, connected by a rod,as 19, with the slid-e-valve of the engine, such slide-valve not Bythrowing the eccentric in either direction the eccentric whenv shiftedserves Ito operate the said valve, and as the eccentric is adjustablethe stroke of the said valve may be regulated, By moving the eccentricto the opposite side of'said neutral position the engine may bereversed, and these different movements of the eccentric are in thepresent case adapted to be controlled by the engineer, and I will nowset forth the Rotative with the engine-shaft and necessarily with thecasino" 2 is a sleeve 20, which is moved longitudinally of said shaft byone arm of a lever, as 21, the lever being shown as being of angle formand being fulcrumed in any desirable way at its elbow. The other arm ofthe lever may be operated by hand in any desirable way to move thesleeve 20 longitudinally of the shaft. The sleeve 20 is provided with anauxiliary sleeve, as 22, which freely receives the screw or spiral 23constituting a rigid extension of the rockshaft 11, and between thethreads of the screw are freely fitted opposite projections 24,

' rigid with the sleeve 22 and diagonally disposed therein. The primaryfunction of the screw 23 and coperating projections 24 is when thesleeve 20 is moved longitudinally of the shaft to break the toggleconsisting of the bar 13 and links 14, so that the spring 16 can drawthe weights 15 inward. When the eccentric 5 is in its neutral position,what may be considered the Hforward ends of the projections 24 areagainst the threaded part of the screw 23, the tails or butts of saidproj ections being out of contact with said threaded part. It thereforefollows that when the sleeve 20 is moved toward the casing 2 theprojections 24 will turn the screw 23 and turned to throw the eccentricthrough the Y medium of the intermeshing gear 12 and segment 9. Theeccentric may be set to any angle, and as the shaft rotates and when thespeed thereof exceeds a certain point the cooperating weights are thrownoutward in order, through the intermediate parts, to move the eccentrictoward its neutral position, this being permitted by reason of the factthat the projections 24 have a free fit in the groove of the screw 23.By running the sleeve all the way in and maintaining it in such relationrocking motion of the shaft 11, and therefore ou tward motion of theweights 15, will be prevented in case it is desired for any cause tothrow the governor out of action. By operating the sleeve 20 the motionof ,the engine may be, as will be clearly evident, reversed at any time.

The threaded stem 17 is provided with a nut 25, carrying a gear, as 26,shown as being of bevel form, and meshing with a coperating bevel-gear27, carried by a shaft 28, the outer end or head of the shaft beingprovided' with lugs 29 to coperate with one of the branches of a fork,as 30, carried by a rod 31, supported for turning motion upon suitablebrackets or bearings on the framework of the engine. The branches of thefork 30 are normall y out of contact with the lugs 29'. When, however,it is desired to regulate the tension of the spring 16, the rod 31 willbe so turned that one of the branches thereof will bein the path of thelugs 29 as the governor rotates, so that on such rotation said branchmay engage the lugs to turn the shaft 28, and thereby, through theintermediate gears 27 and 26 and nut 25, adjust the tension of thespring.

In this way I provide for the regulation of the tension of the springwhile the governor is in motion.

What I claim is- 1. In a governor, a rotary carrier, weights supportedfor oscillation by the carrier, spring means for moving the wei htstoward each other, an eccentric supporte( by the carrier and providedwith a segment, a shaft provided with a gear meshing with said segment,a bar -fixed to the shaft, links connected with the bar and with theweights, the bar and links constituting a toggle to lock the weightsagainst movement toward each other, and means for breaking the toggle topermit the weights to be moved toward each other by said spring means.

2. In a governor, a rotary carrier, weights supported for oscillation bythe carrier, spring means for moving the wei hts toward each other, aneccentric supporte by the car- IOO IIS

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rier and provided with a segment, a shaft provided with a gear meshingwith said segment, a bar fixed to the shaft, links connected with thebar and with the weights, the bar and links constituting a toggle tolock the weights against movement toward each other, andmanually-operable means for turning said shaft.

3. In a governor, a rotary carrier, weights supported for oscillation bythe carrier, spring means for moving the weights toward` each other, aneccentric supported by the carrier and provided with a segment, a shaftprovided with a gear meshing with said segment and also provided with ascrew, a bar carried by the shaft, links connected with the bar and withthe weights, the bar and links constituting a toggle to lock the weightsagainst movement toward each other, and a movable member havingprojections fitted freely in the groove of the screw, said member whenmoved serving to turn the shaft and thereby break said toggle to permitthe weights to be moved toward each other by said spring.

4. In a governor, a rotary carrier, weights supported for oscillation bythe carrier, spring means for moving the weights toward each other, aneccentric supported by the carrier and provided with a segment, a shaftprovided with a gear meshing with said segment and also provided with ascrew, a bar carried by the shaft, links connected with the bar and withthe weights, the bar and links constituting a toggle to lock the weightsagainst movement toward each other, a movable member having projectionsfitted freely in the groove of the screw, said member when moved servingto turn the shaft and thereby break said toggle to permit the weights tobe moved toward each other by said spring, and means for tensioning thespring means during the rotation of said carrier.

5. In a governor, a rotary carrier, weights supported for oscillation bythe carrier, spring means for moving the weights toward each other, aneccentric supported by the carrier and provided with a segment, a shaftprovided with a gear meshing with said segment and also provided with ascrew, a bar fixed to the shaft, links connected with the bar and withthe weights, the bar and links constituting a toggle to lock the weightsagainst movement toward each other, an endwise-movable sleeve providedwith an auxiliary sleeve having opposite projections therein to freelyfit in the groove of said screw, and manually operable means for movingsaid first-mentioned sleeve in an endwise direction.

6. In a governor, a rotary carrier, weights supported for oscillation bythe carrier, spring means for moving the weights toward each other, aneccentric supported by the carrier and provided with a segment, a shaftprovided with a gear meshing with said segment and also provided with ascrew, a bar fixed to the shaft, links connected with the bar and withthe weights, the bar and links constituting a toggle to lock the weightsagainst movement toward each other, an endwise-movable sleeve providedwith an auxiliary sleeve having opposite projections thereinl to freelyfit in the groove of said screw, and a lever acting against thelastmentioned sleeve to move the same in an endwise direction.

'7. In a governor, a rotary carrier, weights supported for oscillationby the carrier, a spring connecting the weights and provided with athreaded stem tapped into one of said weights, a nut on the stem, andmechanism for turning the nut during the rotation of the carrier, tothereby effect the regulation of the tension of said spring.

8. In a governor, a rotary carrier, weights supported for oscillation bythe carrier, a spring connecting the weights provided with a threadedstem tapped in one of the weights, a nut on the threaded stem, a earcarried by the nut, a second gear mes 'n with the iirst-mentioned gearand provi ed with a head having lugs, and a member provided withprojections, each adapted to engage the lugs to effect the regulation ofthe tension of the spring.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

GRANT C. MACOMBER.

Witnesses:

E. EAvEs, HARRY E. SAVAGE.

